Explosive container



W. F, LUX

EXPLOSIVE CONTAINER Filed May 1, 1955 Jan. 5, 1937.

Patented Jan. 5, 1937 UNITED STATES PATENT QFFiCE EXPLOSIVE CONTAINER Application May 1, 1935, Serial No.

2 Claims.

My invention consists in a new and useful improvement in explosive containers and is designed more particularly to provide a container for explosive charges, consisting of either sticks of dynamite or loose explosive,'to be inserted into the ground under conditions in which the bore piepared for the insertion of the charge becomes clogged or crowded by unstable matter, such as sand, gravel or muck flowing into the bore.

Under the present practice, after drilling a bore for this purpose, Vit often happens that quicksand or other unstable matter begins to crowd the bore shut again, so that when an ordinary stick of dynamite is pushed down into the bore,

i5 the interference in the bore has a tendency to tear the paper wrapping of the stick and disintegrate the explosive inside of the wrapper. My improved container comprises a body formed by a tube of suitable size, composed of heavy paper or other suitable material, and forward and rear heads amxed to said body and so constructed and related to the body as to efficiently and satisfactorily armor the body to protect it against rupture from the rough handling required to insert the container through the unstable matter crowding into the bore. In instances where it is required, my container is also provided with a metallic, conical penetrative cap mounted upon the forward head. The entire container after assem- 0 bly is impregnated on its exterior with a suitable waterproof coating. Now, if the stick of dynamite is encased in my improved container, it is able to negotiate its passage through the bore without being disintegrated enroute.` 'I'his is due to the fact that the forward head armors the container against damage from the forcible contact with the unstable matter in the bore, and the rear head armors the container from damage from the `rammer by which the container is forced downwardly through the unstable matter.

While I have illustrated in the drawing flied herewith and have hereinafter fully described one specific embodiment of my invention, it is to be distinctly understood that I do not considermy invention limited to saidspecic embodiment, but refer for its scope to the claims appended-hereto.

In the drawing:

Fig. 1 is a side elevation of the container, illustrating its insertion through a bore and into a yielding mass.

Fig. 2 is a vertical sectional view of the container.

Fig. 3 is an enlarged fragmentary section showing the junction of the body and one of the heads.

Fig. 4 is a vertical section of one of the heads.

assignor to Illinois St. Louis.

(CL 10b-6) Fig. 5 Ais a vertical section of. one of the conical caps.

As illustrated in the drawing, my improved container comprises the cylindrical body A, forward head B and rear head C. The body1 A is composed of an inner portion A-l formed by a two-ply roll of heavy paper or other suitable material, and an outer portion A-2 formed by a two-ply spiral wrapper of paper or other suitable material. When the inner roll A-I has been charged with the explosive, the ends A--2 of the wrapper A-2 are bent inwardly over the edges A-l' of the roll A-I .and tucked in to form an. inner covering for the explosive at the ends of the roll AI.

The head B is composed of the three-ply roll B--l and cap B-2 having the struck-up peripheral ange B-'2', of paper or other suitable material. The layers of the roll B-I are caused to adhere tightly by coating of suitable adhesive S placed therebetween, so that the Wall of head B is substantially a single solid mass. The cap B-2 nts tightly over the roll B-I, adhesive S-I being placed between the inner face of the peripheral ange 5 2 and the abutting outer face of the roll B-I. The inner surface of the cap B-2 has a coating P of paramne or other `suitable material. When the head B is placed on the end of the body A, adhesive S-2 is placed between the head B and body A to x the head B solidly in position against the end of the body A.

The rear head C is identical in construction and-application to the body A with the forward head B, except that it is provided with a centrally disposed orifice O to afford passage of the detonating wires W.

The body A and heads B and C, after assembly,

are exteriorly impregnated with a waterproofing material such as paraiiine to form a coating P-l thereover.

To facilitate penetration, a metallic conical cap M may be mounted on the forward head B, its flange M--I fitting tightly about the flange B2' of the head B.

As illustrated in Fig. 1, it will be obvious that when my improved container is forced by any suitable means through the bore X and into an interfering mass Y. such as sand, gravel or muck, the re-inforced rear head C will endure, without rupturing, the pressure from the forcing means required to insert the container into the mass Y, and the forward head B will endure, without rupturing, the pressure against the mass, if the head B is uncapped, .or against the metallic cap M if the cap M is mounted on the container.

It is also to be noted that by reason of the construction of. the heads B and C, and their application to the body A in the improved method herein described, the integrity of the cylindrical form of the body A is maintained, even while the container is subjected to the considerable pressure required to insert it into firing position.

Having described my invention, what I claim is:

affixed to each end portion of the wrapper; and a cap having a peripheral ange disposed about and axed to each of said last mentioned rolls.

2. In an explosive container, the combination of a tubular body comprising a roll and a spiral wrapper therefor having its ends crimped over the ends of said roll to form an abutment at each end of said body; and a head mounted on each end of. said body and comprising a. roll embracing and aflixed to the end portions of the body and a cap resting against one of said abutments and having a peripheral ange aflxed to the head roll.

WILLIAM F. LUX. 

